Vertical type drying and incineration equipment for municipal sludge

Abstract

The invention discloses vertical type drying and incineration equipment for municipal sludge. The vertical type drying and incineration equipment comprises a furnace body, a feeding pipe arranged at the top of the furnace body, and a slag discharging pipe arranged at the bottom of the furnace body, wherein a preheating region, a drying region, an incineration region, a cooling region and a crushing region are arranged in the furnace body in sequence from top to bottom; the preheating region is positioned below the feeding pipe and consists of a plurality of groups of bulk grate cones and preheated grate basins which are combined in different angles and stacked up and down; the drying region comprises a drying fire grate and a scraper blade arranged on the drying fire grate; the incineration region is positioned below the drying fire grate and allows sludge for self maintaining incineration; the cooling region is a furnace slag cooling region communicated with the incineration region; the crushing region comprises a crushing tower grate communicated with the furnace slag cooling region; the bottom of the crushing tower grate is communicated with the slag discharging pipe. The vertical type drying and incineration equipment has the advantages that drying and incineration of the municipal sludge are integrated; no other fuel is added other than fire, so that self maintaining incineration of the municipal sludge is realized; therefore, an incineration treatment technology for the municipal sludge is simplified, and reducing, stable, harmful and resourceful treatment is realized.

Description

technical field [0001] The invention belongs to the technical field of urban sludge incineration, and in particular relates to a vertical drying and incineration equipment for urban sludge. Background technique [0002] In recent years, under the influence of national energy conservation and emission reduction and active fiscal policies, urban sewage treatment has developed rapidly, and urban water environment governance has achieved remarkable results. During the treatment of industrial sewage, domestic sewage and municipal tap water, sludge of various properties will be produced, with relatively large differences in composition and properties, and some of them are hazardous wastes. However, among the sludge treatment and disposal methods in our country, more than 70% are discarded, 20% are landfilled, and less than 10% are recycled to land after being treated by composting and other technologies. Without effective treatment and disposal of sludge, it is very easy to cause...

AI Technical Summary

Problems solved by technology

The existing incinerators mainly include fluidized bed incinerators, multi-layer grate furnaces and rotary kilns; these incinerators have the following disadvantages: (1) auxiliary fuel needs to be added during incineration; (2) fluidized bed incinerators and rotary kilns The kiln system is divided into two systems of drying and incineration, which makes the operation of the incinerator more complicated and the incineration process complicated: (3) The grate in the multi-layer grate furnace is made of a special alloy that is wear-resistant and high-temperature resistant. Side walls and patio constructed of water-cooled or refractory brick walls; expensive to manufacture and difficult to maintain

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